According to Wikipedia, we find that Pokarekare Ana is a traditional New Zealand love song written in Māori, probably communally composed about the time World War I began in 1914. It has been translated into English, and also enjoys some popularity in Australia
The song is very popular in New Zealand, and has been adapted for multiple purposes, including in advertising and by sporting groups. Notable uses include:
• “Sailing Away”, which promoted New Zealand’s 1987 America’s Cup challenge, and featured an ensemble choir of famous New Zealanders recording as ‘All Of Us’, • It is best known worldwide through Air New Zealand’s TV advertisements in 2000. This version was performed by Rose Hanify (later of NZ Band Supermodel). In particular, the song became a phenomenon in Australia during the 2000 Summer Olympics in Sydney, where the song again became another unofficial anthem, this time for the success of Oceania…